Question: What is the area of mathematics that algebraists practice and contain the word algebra in its name.
Paraphrase: What is the area of arithmetic that algebraists practice and include the word algebra in its name.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1936384 . ?sbj wdt:P3095 wd:Q23900107 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'algebra')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: algebra, algebra